Machine for the manufacture of vacuum-receptacles.



W. R. BURROWS. MACHINE FOR THE MANUFACTURE OF VACUUM RECEPTACLES.

1 APPLICATION FILED MAR. 14. 19H. 1,156,971.

Patented 0015.19, 1915.

4 SHEETS-SHEET I.

l/q i bnaooeo l L z 2 I 3313 ffomw 8 140a whom Patented Oct. 19, 1915. 4 SHEETS-SHEET 2.

l 4a 1 I "f I 3 w. R. BURHOWS. MACHINE FOR THE MANUFACTURE OF- VACUUM RECEPTACLES.

APPLICATION FILED MAR. I4, 1911.

w. R. BURROWS. MACHiNE FOR THE MANUFACTURE OF VACUUM RECEPTACLES.

APPLICATION FILED MAR.14. 1911.

Patented Oct. 19, 1915.

4 SHEETS-SHEET 3.

w. n. BURROWS. MACHINE FOR THE MANUFACTURE OF VACUUM RECEPTACLES.

APPLICATION FILED MAR. I4. 1911. 1,156,971. 1 Patented 0011211915.

4 SHEETS-SHEET 4.

WILLIAM R. BURROWS, 0E NEWARK, NEW JEnsEY.

MACHINE FOR'THE MANUFACTURE OF VACUUM-RECEPTACLES.

pecification of Letters Patent.

Patented Oct. 19, 1915.

Application filed March 14-, 1911. Serial No. 614,288.

To all whom it may concern.

Be it known that I, \VILLiAM R. BURnows, a citizen of the United States, and a resident of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in- Machines for the Manufacture of Vacuum-Receptacles, of which the following is a specification.

The invention relates to a novel machine for the manufacture of vacuum receptacles of the character comprising an inner receptacle or bottle member and an outer receptacle or bottle member separated by a space from each other and out of contact with each other except at their lip edges where they are fused together, a vacuum being formed in the chamber between the two members. 1

It has been customary in. the formation of vacuum receptacles, especially when they are of considerable size, to inter-pose supporting studs or the like between *thelo'Wer portions of the members thereof for aiding in enabling the inner or receiving member to resist strains.

My invention pertains moreparticularly;

to a novel machine for aiding in the closing of the lower skirt portionof the outer receptacle or bottle member with relation to the closed bottom of the inner receptacle or hottle member and in the formation of the usual hole in the lower portion of the outer member through which the vacuum is created. My invention is therefore confined to the treatment of the lower end of the outer member for its formation to inclose the lower end of the inner member, said members when applied to my present machine having been already connected together at their lip edges by preceding, stages in the process of manufacture.

i In its preferred formthe machine of my present invention comprises a rotarv frame *arr ving a plurality of chuck mechanisms adapted to engage the sides and lower end of the outer receptacle members, and means for rotating said mechanisms when the frame is at its at-rest positions adjacent to burners for directing flames against the lower skirt portion of the outer bottle members, said chuck mechanisms being in themselves at rest when said rotary frame is in motion. I preferably provide the rotary away, ofthe same; Fig. a vertical scc frame with four chuck mechanisms, so that at least three of the pairs of bottle members may, in the at rest periods of the rotary frame, be rotated in the presence of flames from the gas-burners, while the fourth chuck mechanism is at the front of the machine in position for the removal of a completed receptacle and the reception of a pair of connected'members to be carried on the next i11- termittent vmovement of the rotary frame to a burner. The chuck mechanisms are of special character and adapted to engage the outer receptacle members at their lower edges and also at their upper side portions; The gas burners which first act upon the outer bottle members are for heatiin the glass thereof preparatory to the acti I i the glass of the finalburner, at which reel important work is performed, a water cooled hand tool being en'iployed during the rota tion of the bottle members at said finaf burner to close the lower skirt of the out; member uniformly below the closed bottofn of the inner member. I also provide means for heating a special spot in the lower wall of the outer member and admitting compressed air, to within said member so that 8- it may blow a hole through the same at said, spot, the glass being blown outwardly to form f a hole and leave an outwardly projecting flange surrounding the same. j During the operation of forming the hole in the lower avail of the outer bottle member, the power}, is cuton from the chuckmechanism hold ing that special bottle so as to interrupt the, rotation of the same. r

. The invention will be. fullyunderstood from the detailed description hereinafter presented, reference being had {to the ac companying drawings, in wlfich Figure 1 is a top ele anon ofia machine constructed in accordanceiwith and embody-. ing the invention; Fig. 2 is""a'fi'ont eleiation, partly in section and partly, broken; v,

tion on a larger scale than Figs. l and'2, of one of the rotary chuck mechanisms for re ceiving and holding the oute'rbottle blanks or members preparatory to theclosing of the lower portions of the same below the inner bottle members; Fig. l is a top view of the same; Fig. 5 is a horizontal section of the 1o? same on the dottedline 5-5 o f lflig 3; Fig;

' is a detached side elevation, partly in sec tion, of the bottle showinga further stage 6 is a detached sectional view of a portion of the machine utilized for admitting compressed air with n the chamber formed in the outer bottle member during one stage .of the operation of completing the bottle;

lower portion, worked under the inner bottle member manual manipulation against the softened glass of a water-cooled tool represented in Fig. 9 in perspective; Fig. 10

v of the process of its manufacture, consisting in the formation in one side of the bottom of the outermember of a small aperture surrounded by an outwardly pro ecting flange,

' Fig. 10 also showing a jet gas burner used i for heating the glass at the point where the hole is to be formed,-so that compressed air admitted within the outer bottle member may blow said hole therein and in an outwardly direction; and Fig. 11 is a detached side elevation, partly broken away, of the bottle after, the lower portion of the outer member has been completely closed in below the inner bottle member.

In the drawing, 15 designates the table or bed-plate of the machine, 6 a horizontal rotary frame supported above said bedplate, and 17 a vertical shaft having mounted upon its upper end said frame 16. The frame 16 is shown as a spider frame comprising four equally spaced apart radial arms numbered, respectively, 18, 19, 20, 21, and said frame is to be rotated or moved by hand, being given a onequarter turn at each movement and yieldingly locked at the end of each movement by the spring latch 22 arranged to engage a shoulder 23 on the outer end of the said arms as the latter are moved against it. Vhil'e each arm of the frame 16 is formed with a shoulder 23, one latch 22 is suliicient to hold the entire frame stationary during its at rest periods.

Each arm of the frame 16 is formed near its outer end with a vertical bearing sleeve containing a rotary sleeve 25 (Fig. 3) upon whose lower end are secured the gear wheels 26, 27 and whose upper end'is formed with an annular shoulder 28 and supported on ball bearings 29 at the upper end of the sleeve 24. Each sleeve 25 has secured within it by a screw 30 a tubular rod 31 which is normally open at both ends and has Secured upon its upper end a disk 32 provided with an upwardly extending circular flange 33 forming a cup adapted-to receive the lower edges of the outer bottle member, as shown in Fig. 3.

Upon the tubular rod 31 above the sleeve 24 is a loose spool 34, and upon said rod above this spool is an ai'inularly grooved disk 35 which is normally pressed downwardly against the spool. by means of a .coiled. spring encompassing the rod and a hub receiving the same formed on the disk 32. I provide the disk with a series, say three, of pivoted radial clutch arms 37 whose lower ends turn inwardly and enter the annular groove in the disk 35, and whose upper ends turn inwardly-through slots in the flange 33 for the purpose of engaging the lower edges of the outer bottle member and clamping the same firmly within the cup formed by the disk 32 and flange 33. When it is desired to insert the bottle member within the flange 33, the operator will take hold of the spool 34 and press the same upwardly in opposition to thestress of the spring 36 and thereby cause the lower ends of the arms 37 to move inwardly toward each other and the upper ends of said arms to turn outwardly to their open position to admit the lower edges of the outer bottle member between. them, after which the spool 34 is released and the spring 36 will move said spool and disk 35 downwardly and the latter by moving against the lower ends of the arms 37 will cause said arms to move.

' edges of the outer bottle member.

Each sleeve 24 of each arm of the frame 16 has a clamped on it a horizontal bar 39- (Figs. 3 and 5) standing preferably at right angles to the frame-arm and having secured to its outer end a vertical tubular rod 40 within which is mounted a vertical shaft 41 carrying at its lower end a pinion wheel 42 in constant mesh with. the aforesaid gear wheel 27 and at its upper end a pinion wheel 43 in. constant mesh with a ring gear wheel 44 which is rotatably mounted in a horizontal open frame 45 supported from the tubular rod 40 and secured thereto by .a set screw 46. The ring gear wheel 44 and frame 45 concentrically encircle the bottle members 47, 48and are above the gear Wheel 27. Th inner bottle member 47 has in the condition of the manufacture shown in Fig.

3 been fused at its lip edge to the lip edge of the outer bottle member 48 and is supported by the outer bottle member. The outer bottle member 48. has an open lower end resting upon the disk 32, andthe upper portion of the outer bottle member is held within the ring geer wheel 44 andifra'me 45 the latter release the clamp 55. carried by said bar 5O disk 35,

drtares secui by a clamping mecl'izmism secured'to said sear wheel and comprising (F igs. 3

ped bar 50, pivoted at one end, at, 51,

l 52 pivoted to the other end of Shit bar and having a deflected arm 53 connected by a spring fi t'with one end of the bar 4:9, and a series of preferably three radially adjustable clamp bars or plates 55, faced i ireferably with asbestos where they engage the bottle member 48. In Fig. at I show the clamping mechanism carried by the ring wheel all in its closed condit on seen! 1 holdin the outer bottle member the pivoted our hcing held in its closed position by the spring 54:. Tfhen it desired tcopen the clamping mechanism to release 2v bottle or to insert a bottle for treatment by the present machine, the handle w l, lni'iking at Fig. l, beturncd outwardly so as to move the deflected arm thereof inward y toward the bottle and then around toward the statioin-n'y end of the spring, he deflected portion 53 of the lever when in the condition iust stated, serving in effect as a link extending from the end of the bar 50 and permitting the free end of to open outwardly far enough to from the bottle.

Each arm of the frame US is equipped with the mechanism l have just-described comprising (Fig. 3) the beaming sleeve 24-, rotary sleeve EN, gear-wheels 26, 127, tubular rod 31, disk 32, spool ill, annularlv grooved spring 36, clutch arms bar 39, rods ll), ll. pinion wheels 1' 2, 4-3, ring gearwheel i open frame -t5'and the clamping :l on said ring gear-wheel; and said mechanism may be conveniently bonsidzred as a rotary chuclomechanism for vertically holding and rotating the connected bottle members 47, 4S. lhere willibcino rotation-of the chuck and bottle meiiibers,

however, ex ept when the goz'lr-wheel 126 f a chuck mechanism is in engagement n itlilii driving gear-wheel of the driving mechzinism. When ti" on its quarter-if. s, all the chuck-mecha} nisms ark in them-selves at rest, and in' the H'HH'iii? sonted herein when the frame"! 6 is at-iest periods,'all of the chuckmechahisms-will be in rotation with the ex-; on of the one then at the front of the 1 permit the cepii machine, that ne being idle to attendant to withdraw therefrom the bottle then completed so far as the present machine'is rned and iiisert therein bottle manhole or the character shown in Fig. 3 to have the low r :l of 'tlicoutcr member t the same to the condition The mechanisms foi iiechanisri'is with the oxa stationary arc-shaped bar 49 an frame US is ljieing ir oved at the zit-rest periods of the frame 16, may be understood from Figs. 1 and 2 and com-' prise a main driving gear-wheel preferably located below the bed-plate or table 15, a series of three vertical shafts (30 extending through the bedplate 15 and mounted in vertic: l bearings 61 upon said bed-plate, gear wheels (52 secured on the lower ends of said shafts G0 and always in mesh with said gear-wheel 54), and gear wheels (33 upon the upper ends of said shaft 60, said shafts G0 and gear-wheels (33 being so positioned with relation to the chuck mechanisms carried by the frame 16 that when said frame is moved to an anti-rest position, such as illustrated in Fig. -1, the gear-wheels 26 thereof will move into engagement with the gear-wheels (i3 and be rotated thereby. chuck mechanisms carried by the frame 16, but I provide only three shafts (30 carrying gear-wheels 63, and hence when the frame 16 is moved to an at-rest position, the two side and one rear chuck mechanisms will be set in rotation from the wheels (53, while the front chuck mechanism will'remain idle, so that as hcreinbefore explained the operator may withdraw the bottle therefrom and insert bottlen1embers thereto. The gearwheels 63 may have a constant rotation but, have no influence on the chuck-mechanisms carried by the frame 16, except when said frame is at an at-rest position. The gearw-hecl 5!) drives the gear-wheels 62, shafts (3t) and gear-wheels (33 and it is driven from a pulley-wheel (A around which a belt loading from a pulley-wheel 66 on the main driving shaft (17 passes.

The rotation of a gear-wheel 26 of a chuck mechanism from a gear wheel 63 results in the rotation of the sleeve 25 and parts con nected therewith ahd actuated therefrom, The rotation of thchsl eeve results in the tubular rod 31, to which it is connected, being rotated, and since the disk ilZ'is connected with said rod 31, said disk and the clutch arms 37 will. rotate therewith and with the lower end of the oulien bottle member 48. The gear-wheel 27 is secured. to the sleeve 25, as shown in Fig. 8,and hence when said sleeve is rotatedsa'id gear-'\\-'liecl 27 will also rotate and impart rotary movement to the gear wheel 42, rod or, shaft 41 and gear wheel 43, and atthe same time the wheel l3 will impart motion to the ring gear-wheel 4 l, causing the latter to,rotate in time with the rotation of the rod "31 and gear-wheel 27 and imparting through the clamping mesh-- There are four hereiubefore."

frame'll i. will be in mothe chuck mechanisms of the frame 16 as ,said mechanisms come to rest at the front of the machine, and during the intermittent rotary movement of the frame 16 the bottle members are carried first to a position adjacent to; a gas burner 68, then to a posi-v tion adjacent to a gas burner 69, and th n to 'a position adjacent to a Bunsen burner 70 and auxiliary burner 71. The burners 68, 69 direct their flames against the lower portion of the bottle. member 48 and properly heat the same preparatory to the softening and treatment of said portion of thebottle member upon arriving opposite to the burner 70. The'bottle members are rotated when the frame 16 is at its at-rest positions, with the exception of the bottle held idle at the front of the machine, and hence the flames from the burners may uniformly act u on the bottle member 48. The only effect the burners 68, 69 is the proper preparatory heating of the lower portion of the bottle member 48, but when said member is ad jacent to the burner 70 and. subjected to the stronger heat flame, the skirt portionof said bottle member must be worked under the inner bottle member and finally become closed, as I illustrate in Figs. 8, and 11.

The burner 70 has just below it an asbestos covered table 72, which serves to confine the I heating action of the burner 70 to the proper portion of the skirt of the bottle member 48.

During the rotation of the bottle members when in position adjacent to the burner 7 O, the operator, by means of a water-cooled tool 73, will work the skirt of the bottle member 48 below the member 47, as illustrated in Fig.8, and after this work has proceeded a suitable length of tiine, the operation of forming theaperture or hole 74 surrounded by an outwardly extending flange will be performed, and during the formation of the hole 74 I preferably turn off the -as from the burner 70 and arrest the bott e members and ignite the gas at the I jet burner 71. In arresting the bottle members held adjacent to theaf bprners 70, 71, without disturbing the bottle members adjacent to the burners 68, 69, I disengage the clutch 75 (Fig. 2) from the left hand gear wheel 63 so that said wheel may run ldly and therefore not impart motion to the gear wheel 26 connected with the left handchuck mechanism. The clutch 75 may be" moved from engagement with the gear wheel 63 by means of a pivoted lever 76, vertical link 77 connected therewith, pivoted lever bar 78 to which the lower end of said link is pivot.- ally connected, and a power rod 79 pivoted to one end of the lever 78 and adapted to be moved by means of a treadle (not shown), by hand, or otherwise. A spring 80 serves to hold the lever 78 and parts connected with it in their initial normal position, with the clutch 75 connecting the shaft with the gear wheel 63. I also utilize the pivoted lever 78 as a means for turning on the air ,7 and gas to the burner 71, said burner beingv supplied from the pipes or tubes 81, 82/, leading from a valve83 which is supplied with the air and gas through pipes 84, 85, and is operable by a crank arm 86 connected with a pivoted lever arm 87 which is connected with the aforesaid lever arm 78 by means of a link- 88. The mowement of the lever arm 78 to disengage the clutch 75 and cut off rotary movement from the left hand bottlemembers, operates at the same time through the link 88. pivotedlever arm 87 and crank arm 86, to open the passage through the valve 83 so that air and gas may pass through the pipes 81, 82 to the J burner 71. When the lever arm 78 is re- ]easedto return to its normal position under the action of the spring 80, it automatically closes the valve 83 and cuts off the supply of gas and air to the burner 71.

The burner 71 is a jetburner and it is used exclusively for softenin a small spot in the bottle member 48 su cient for the formation of the hole 74 and its surrounding flange, and after the flame from the burner 71 has sufficiently acted on the glass, I admit compressed air to within the bottle member 48 so that at the spot softened and weakened by the action of the flame from the burner 71, the air may blow'through the wall ofthe member a-nd'form the hole or aperture 74 with its outwardly projected flange. The compressed air is admitted to the outer bottle member 48 through thetubular rod 31 and is supplied from any suitable source through a pipe or tube 89 (Figs. 1 and 6) connected with a vertically slidable pipe 90 adapted for vertical movement by the manual action of a lever .91 and having ,at its lower ends. valve 92 for controlling therethrough. The pipe 90 exwhen said pipe is elevated by means of the lever 91, the valve is opened by means of a crank arm 93 connected therewith, becoming arrested by a stationary pin 94 during the upward movement of said pipe, with the result that when the upper end of the pipe 90 meets and presses against the 'lower end of the tubular rod 31, the valve 92 will have been opened and the compressed air. may flow through the same and the pipe 90 and tubular rod 31 into the outer bottle member 48. The compressed air within the bottle member 48 will seek the weakest spot for its escape, and this spot .will be the one thoroughly softened bythe action of the flame from the burner 71. After the hole 74 has been formed by the discharging air, the pipe 90 will be lowered, thereby effecting the closing of the valve 92 and the cutting off of the compressed air, and the use of the burner 71 will cease until another pair of bottle members reach this location and require the formation of the hole 74:. After the hole 74 has been formed the spring 80 will be permitted to reset the clutch 75 so that the rotation of the bottle members may be renewed, and at thistime the burner is again placed in action and the operator by means of the tool 73 will continue the manipulation of the skirt of the bottle member 48 until the same has entirely closed below the inner bottle member or reached the condition shown in Fig. 11, which shows the outer bottle member as having been completely formed below the inner bottle member and separated therefrom by a substanti ally uniform space.

The upper or lip edges of the bottle members may be secured together in anv convenicnt way or by any convenient means, but

I recommend for the purpose the use of a.

machine of the character described and claimed in an application, Serial Number (314,299. for Letters Patent filed by me concurrently herewith. I desire it to be understood that I do not limit my invention to the details of construction hereinbefore described since the same may be variously modified within the scope of the claims. I prefer to employ a rotary frame employing four chuck mechanisms, as shown, since by reason thereof two pairs of bottle members may be subjected to preparatory heating while one pair of bottle members is receiving final treatment. I have'found that with the employment of a rotary frame employing four chuck mechanisms the bottles may be manufactured accurately and with considerable rapidity, and a greater output secured than would be possible with the use of a single chuck mechanism or two chuck mechanisms. invention, in its broader scope, to the employment of any special number of chuck mechanisms, since the number shown may obviously be increased or diminished.

What I claim as m invention and desire to secure by Letters Patent, is:

-1. In a machine for ,giding in the closing together of the lower portion of the side I do not however limit the Walls of a partly formed outer member of a vacuum-receptacle below and spaced from the closed bottom of the inner member thereof, av chuck-mechanism having means to engagethe sides of said outer member, a supporting mechanism to receive the lower end of said outer member at a distance below said inner member, means for rotating said mechanisms and the members carried there by, a burnerfor directing a flame against said lower portion of the outer member during such rotation, whereby a tool may be applied for moving the softened lower wall portions of the outer member inwardly during such rotation, to close the same together below said inner member, means for temporarily arresting the rotation of said mechanisms and members prior to the closing of the lower end of the outer member, a jetburner for softening a spot in the lower part of said outer member, and pneumatic means for forming a hole through the same at said spot.

2. In a machine for aiding in the closing of the lower portion of the outer member of a vacuum-receptacle with relation to the closed bottom of the inner member thereof, a chuck mechanism comprising a ring gear wheel adapted to receive within it the outer reccpta ole-member containing the inner memher and having releasable clamping means for engaging the side surfaces of the same, a frame supporting said ring gear. wheel, a support for the lower open end of said outer member, a rod (31) constituting a part of said support, a sleeve (25) connected with said rod, a gear wheel connected with said sleeve, means for imparting rotary motion to said gear wheel, and a rod having pinions in mesh with said gear Wheel and saidring gear wheel for assuring simultaneous rotation of said clamping means and said support, combined with a burner for directing a flame against the lower portion of said outermember during its rotation for enabling the closing inwardly of the same by an applied tool.

3. In a machine for aiding in the closing of the lower portion of theouter' member of a vacuum-receptacle with relation to the closed bottom of the inner member thereof, a chuck mechanism comprising a ring gear wheel adapted to receive within it the outer receptacle-member containing the inner member and having releasable clamping means for engaging the side surfaces of the same, a frame supporting said ring gear wheel, a support for the lower open end of said outer member, a manually releasable clutch mechanism for engaging the lower edge of said outer member and connecting the same with said support, a rod (31) constituting a. part of said support, a sleeve (25) connected with said rod, a gear Wheel connected with said sleeve, means for imparting rotary motion to said gear wheel, and a rod-having pinions outer member during its rotation for enabling the closing inwardly bf the same by an applied tool.

4. In a machine for aiding in the closing of the lower portion of the outer member of a vacuum-receptacle with relation to the closed bottom of the inner member thereof, a chuck mechanism comprising a ring gear wheel adapted to receive within it the outer receptacle-member containing the inner member and having releasable clamping means for engaging the side surfaces of the same, a frame supporting said ring gear wheel, a support for the lower open end of said outer member, clutch arms pivoted to said support and adapted at their upper ends to engage the lower part of said outer member for connecting the same with said support, a vertically movable disk engaging the lower ends of said clutch arms for operating the same, a spring acting against said disk to close said arms against the receptacle-member, a spool below said disk for manual movement against the same to open said arms from said member, a rod (31) constituting a part of support, a sleeve (25) connected with said rod, a gear Wheel connected with said sleeve, means for imparting rotary motion to said gear Wheel, and a rod having pinions in mesh with said gear wheel and said ring gear wheel for assuring simultaneous rotation of said clamping means and said support, combined with a burner for directinga flame against the lower portion of said outer member during its rotationfor enabling the closing inwardly of the same by an applied tool.

5. In a machine for aiding in the closing of the lower portion of the outer member ofa vacuum-receptacle with relation to the closed bottom of the inner member thereof, a chuck mechanism comprising a ring gear wheel adapted to receive within it the outer receptacle-member containing the inner member and having releasable clamping means for engaging the side surfaces of the same, a frame supporting said ring gear Wheel, a support for the lower open end of said outer member, a tubular rod constituting a part of said support, a sleeve (25) connected with said rod, a gear wheel connected with said sleeve, means for impartlng rotary motion to said gear wheel,

and a rod having pinions in mesh with said gear wheel and said ring gear wheel for assuring simultaneous rotation of said clamping means and said support, combined with a burner for directing afiame against the lower portion ofsaid outer member during its rotation for enabling the closing inwardly of the same by an applied tool, means for temporarily arresting .the rotation of said chuck-mechanism and members i prior to the closing of the lower end of the outer member, a jet-burner for softening a spot in the lower part of said outer member, and means for directing air under pressure through said tubular rod to within said outer member for blowing a hole outwardly through the same at said spot.

(5. In a machine for aiding in the closing of the lower portion of the outer members of vacuumreceptacles with relation to the closed bottoms of the inner members sitions, and burners mounted to direct their flames against the lower-portion of they, outer members during such rotation, thelg" final burner being adapted to sufliciently soften the glass to enable the closing-in of such lower portion by an applied tool, combined with means for temporarily arresting the rotation of the chuck mechanism at said final burner prior to the complete closing of the lower end of the outer receptaclemember, a jet-burner for softening. a spot in the lower part of said outer member when the latter is at rest, and means for directing air under pressure within said outer member for blowin a hole outwardly through the same at sai spot.

7. In a machine for aiding in the closing of the lower portion of the outer-members of vacuumreceptacles with relation to the closed 'bottoms of the inner members thereof, a rotary frame having a plurality of rotary chuck-mechanisms each adapted to engage an outer receptacle member containing an inner member and hold the same vertically and having a driving gear-wheel at its lower end, a driving mechanism having gear wheels positioned to engage and drive the gear-wheels of said chuck mechanisms at the at-rest positionsof said rotary frame, and burners mounted to direct their flames against the'lower skirt portions of the outer receptacle-members during their rotation with said chuck-mechanisms, the final burner being adapted to effect sufiicient softening of the glass toenable the closing-in of the same by an applied tool, combined with means for temporarily arresting the rotation of the chuck mechanism at said final burner prior to the complete closing of the lower end of the outer receptacle- Signed at New York in the county of New member, a jet-burner for softening a spot Yorkand State of New York this 13th day in the lower part of said outer member when of March A. D. 1911.

the latter is at rest, and means for directing WILLIAM R. BURROWS. air under pressure within said outer mem- Witnesses: her for blowing a hole outwardly through CHAS. C. GILL, the same at said spot. I ARTHUR MARION. 

